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Dan Barrett

2x founder

Dan Barrett

Founder & CEO, OpenProse (YC P26)

FounderOpenProse logoOpenProse· Spring 2026🇺🇸 Boston, Massachusetts, United States
in LinkedIn𝕏 @irl_danB
2025Founder· OpenProse
Founder · since 2021
Company
OpenProse
Role
Founder & CEO
current
Stage
—
no public source
Raised
—
no public source
Based
Boston, MA
current
Founder / co-founder — the company's markEmployee / research role
Source: LinkedIn work history
Profile coverage5 of 7 · missing posts, contact
OpenProse logo
OpenProse

An open-source operating system for reliable long-running agents

Spring 2026

Experience

Career

  • OpenProse logo

    OpenProse

    Founder

    Founder & CEO · Boston, MA · 2025 – Present

    2025
  • Smashing App logo

    Smashing App

    Co-founder

    Cofounder & CTO · 2021 – 2025

    2021
  • Architect.io logo

    Architect.io

    Senior Software Engineer · Boston, Massachusetts, United States · 2019 – 2022

    2019
  • Madaket Health logo

    Madaket Health

    Software Architect · Cambridge, Massachusetts, United States · 2016 – 2019

    2016
  • SS&C Eze logo

    SS&C Eze

    Software Engineer · Boston, Massachusetts, United States · 2013 – 2016

    2013

Bio

Software engineer of 12 years, agent developer of 5 years, two time founder. Creator of OpenProse.